What's New as of February 1st, 2010

Changes For This Release

This release added a couple options to help with file system parameters added in version 17.05.

The new options added are:

        maxdata= (limit the data created for all files)
       maxfiles= (limit the number of files for all directories)

      These ideas come from IBM's Blast Tool!

The following changes were made to dt Version 17.07:

Within NetApp, the updated dt kits are located @ URL:

http://web.rtp.netapp.com/~rtmiller/dt.html

External to NetApp, you can obtain dt kits from URL:

TBD

Mail Send mail to admin of this page: Robin.Miller@netapp.com Home To Robin's home page.

Last Modified: March 1st, 2010


Examples:


hyde% dt version
    --> Date: February 1st, 2010, Version: 17.07, Author: Robin T. Miller <--
hyde% dt of=/var/tmp/dtdir/dt.data count=1 files=15 sdirs=100 maxfiles=100 disable=pstats
dt: End of Write pass 0/1, 100 blocks, 0.049 Mbytes, 1 records, errors 0/1, elapsed 00m01.40s
dt: End of Read pass 1/1, 100 blocks, 0.049 Mbytes, 1 records, errors 0/1, elapsed 00m00.00s

Total Statistics:
     Output device/file name: /var/tmp/dtdir/d6/dt.data-00000010 (device type=regular)
     Type of I/O's performed: sequential (forward)
   Data pattern read/written: 0x66673326
     Total records processed: 200 @ 512 bytes/record (0.500 Kbytes)
     Total bytes transferred: 102400 (100.000 Kbytes, 0.098 Mbytes)
      Average transfer rates: 73143 bytes/sec, 71.429 Kbytes/sec
     Number I/O's per second: 142.857
      Total passes completed: 1/1
       Total files processed: 200/1515  <- (100 written, 100 read)
       Total errors detected: 0/1
          Total elapsed time: 00m01.40s
           Total system time: 00m00.07s
             Total user time: 00m00.00s
               Starting time: Mon Mar  1 13:51:35 2010
                 Ending time: Mon Mar  1 13:51:37 2010

hyde% dt of=/var/tmp/dtdir/dt.data count=1 files=15 sdirs=250 maxdata=1m disable=pstats
dt: End of Write pass 0/1, 2048 blocks, 1.000 Mbytes, 1 records, errors 0/1, elapsed 00m28.98s
dt: End of Read pass 1/1, 2048 blocks, 1.000 Mbytes, 1 records, errors 0/1, elapsed 00m00.10s

Total Statistics:
     Output device/file name: /var/tmp/dtdir/d136/dt.data-00000008 (device type=regular)
     Type of I/O's performed: sequential (forward)
   Data pattern read/written: 0x33333333
     Total records processed: 4096 @ 512 bytes/record (0.500 Kbytes)
     Total bytes transferred: 2097152 (2048.000 Kbytes, 2.000 Mbytes)
      Average transfer rates: 72117 bytes/sec, 70.426 Kbytes/sec
     Number I/O's per second: 140.853
      Total passes completed: 1/1
       Total files processed: 4096/7530
       Total errors detected: 0/1
          Total elapsed time: 00m29.08s
           Total system time: 00m01.28s
             Total user time: 00m00.12s
               Starting time: Mon Mar  1 13:55:47 2010
                 Ending time: Mon Mar  1 13:56:16 2010

hyde%